A young woman is found murdered in a Lucerne apartment. For Reto Flückiger (Stefan Gubser) and his colleague Liz Ritschard (Delia Mayer), everything initially points to a relationship. Thomas Behrens (Alexander Beyer), the lover of the murder victim, is under suspicion. But the IT specialist has recently disappeared. Surprisingly, his wife Ilka (Karina Plachetka) alerts the police. She is being followed by an unknown car with tinted windows. Apparently her husband is trying to intimidate her because she wants to leave him. Flückiger takes care of the distraught woman, but finds neither any indication of who he is looking for nor of any pursuers. In the meantime, Behrens turns himself in to the authorities.
The computer scientist claims they want to kill him because he stole sensitive account data from his employer, a well-known private bank. When he panics and rampages in the interrogation room, he is placed in a psychiatric wardbriefed. He takes his own life that same night, but for Flückiger it doesn't look like suicide. Suddenly he too feels persecuted. In this dramatic SRF "crime scene" Reto Flückiger and Liz Ritschard are shown their limits. As Swiss investigators, Stefan Gubser and Delia Mayer get caught up in an impenetrable web of fraud, jealousy and bank secrets, in which powerful men from the financial sector are pulling the strings. Tobias Ineichen, known as a virtuoso crime director since "Tatort: Snowdrift", succeeds in striking the perfect balance between paranoia and real threat.
Idyllic Switzerland shows itself from a completely different side. Alexander Beyer shines in the other leading roles as an IT expert, Karina Plachetka as his wife Ilka, who feels persecuted, Georg Scharegg as the murder victim's jealous husband, Pierre Siegenthaler as the bank director Sonderer and Kenneth Huber as the man for the rough.